Sinister Diesel - Down Pipes for Duramax

Improve the Look

Sinister Diesel’s has exhaust down pipes for your Duramax diesel’s exhaust. Whether you prefer stainless or aluminized steel, 4” or 5” diameter, we have exactly what you are looking for and carry top brands like Flo-Pro and MBRP.

Enhance the Performance

Upgrading your diesel truck’s stock exhaust with an aftermarket down pipes is one of the easiest ways to enhance its overall performance. An aftermarket down pipe will assist in allowing your Duramax engine to breathe more efficiently leading to a drop in exhaust gas temperatures and a boost in horsepower and torque.

Deepen the Sound

Replacing your current down pipe with an aftermarket down pipe will help give you that smooth, deep resonant sound that every diesel truck owner desires.

Why Buy Your Down Pipes from Sinister?

We have a wide selection of down pipes to choose from, and each is backed by free, live technical support and our Sinister guarantee. So pick your exhaust pieces and start enjoying everything that comes with a performance exhaust kit!